Hay que desencillar (desensillar) hasta que aclare

[ookami]

Well, it has been explained. I found this in a website, to understand it in the context:

"Desensillar hasta que aclare" dijo Perón en el año 1966, cuando era claro que lo que se venía era la dictadura militar de Onganía.

"Desensillar hasta que aclare" said Perón in 1966, when it was clear that a militar dictatorship was about to begin.

And in the English wiki page of Argentinian History (1966-1973):

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In 1969, the CGT de los Argentinos (CGTA, headed by the graphist Raimundo Ongaro) headed social movements, in particular the Cordobazo, as well as other movements in Tucuman, Santa Fe and Rosario (Rosariazo). While Perón managed a reconciliation with Augusto Vandor, head of the CGT Azopardo, he followed, in particular through the voice of his delegate Jorge Paladino, a cautious line of opposition to the military junta, criticizing with moderation the neoliberal policies of the junta but waiting for discontent inside the government ("hay que desencillar hasta que aclare", said Perón, advocating patience). Thus, Onganía had an interview with 46 CGT delegates, among whom Vandor, who agreed on "participationism" with the military junta, thus uniting themselves with the Nueva Corriente de Opinión headed by José Alonso and Rogelio Coria.

I hope it's more clear now. And I'm actually studying that period of Argentinian history at the moment, just before posting this I was with that!

It's curious that you are coming here at the end of June, and I'm going to the USA at nearly the same time :P